AOC L22W631

22’’ LCD TV AOC L22W631
1
Service
Service
Service
Horizontal Frequency
31.5-80 kHz
TABLE OF CONTENTS
Description Page Description Page
SAFETY NOTICE
ANY PERSON ATTEMPTING TO SERVICE THIS CHASSIS MUST FAMILIARIZE HIMSELF WITH THE
CHASSIS AND BE AWARE OF THE NECESSARY SAFETY PRECAUTIONS TO BE USED WHEN SERVICING
ELECTRONIC EQUIPMENT CONTAINING HIGH VOLTAGES.
CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICING
R FOR TH
UNIT WHEN S
CI
Table Of Contents.......……..............................…........1
Revision List.…........................................……......3
Important Safety Notice.......................................……......2
1. General Specification..............................………........4
2. Operating Instructions…………………….……….......5
2.1. The Use Of Remote Control…….………….…….......5
2.2. To Use The Menu…...…………………….……….......6
2.3. How To Connect…….…………………….……….....10
2.4. Front Panel Control Knobs……………….……….....12
3. Input/Output Specification…………....................…....13
4. Mechanical Instructions…………………….................16
5. Repair Flow Chart ……………………….…….…….....19
6. PCB Layout ………………..………………....….......25
6.1.Main Board…………..… ……… .……….......25
6.2.Power Board……………..………….……….......28
6.3.Tuner Board……………………..………..............30
6.4. IR Board………………………………..……….......30
7. White-Balance, Luminance Adjustment...................31
8. Block Diagram.……...........................................33
9. Schematic……………...…………..………………...34
9.1 Main Board…….…………..……………….….......34
9.2.Power Board…………….……….………….......46
9.3.Tuner Board……………………..………..............48
9.4.Key Board……………………..………..............52
10. Exploded View..……………............................…..53
11. BOM List……………….………………………….….54
12.Different Parts List…………………………………..73

AOC L22W631 Specifications

General

Brand	AOC
Model	L22W631
Category	LCD TV
Language	English

Summary

Safety Notice

Safety Precautions

General safety information for servicing electronic equipment.

Important Safety Notice

Warnings and Precautions

Warnings on replacement parts, design modification, and laser radiation.

General Specification

Key Specifications Overview

Specifications for panel, function, power, environment, and accessories.

Operating Instructions

Remote Control Usage

Explanation of remote control buttons and their functions.

Menu Navigation and Setup

Guide on navigating menus for Audio, Video, Function, and TV setup.

How to Connect Peripherals

Peripheral Connection Guides

Instructions for connecting DVD players, cameras, and set-top boxes.

Front Panel Controls

Front Panel Button Functions

Description of front panel buttons: VOL, CH, MENU, INPUT, POWER.

InputOutput Specifications

Signal Input Specifications

Details for RGB, RF, AV, HDMI, and Component video inputs.

Compatible Video Modes

Video Mode Compatibility Table

Table detailing compatible video modes and timings.

Mechanical Instructions

Disassembly Procedures

Step-by-step instructions for disassembling the TV.

Repair Flow Charts

No Power Troubleshooting

Troubleshooting for 'No Power' with no LED indication.

Start-up Issues Troubleshooting

Troubleshooting for 'Cannot start' with LED indicator issues.

Display and Sound Issues Troubleshooting

Troubleshooting for 'No display' and 'No sound' issues.

Key Board Troubleshooting

Troubleshooting steps for Key Board related problems.

PCB Layouts

Main Board PCB Layout

Layout diagram for the main PCB.

Other Board PCB Layouts

Layout diagrams for Power, Tuner, and IR boards.

White Balance and Luminance Adjustment

Adjustment Procedure and Settings

Procedure for adjusting white balance and luminance using specific settings.

System Block Diagram

Block Diagram Overview

Overall functional block diagram of the TV system.

Schematic Diagrams

Main Board Schematic

Schematic diagram for the main board.

Power Board Schematic

Schematic diagram for the power board.

Tuner Board Schematic

Schematic diagram for the tuner board.

Key Board Schematic

Schematic diagram for the key board.

Other Component Schematics

Schematics for Scaler Power, MCU, CAT6011, UOCIII, ADC, Connectors, AMP.

Exploded View and Parts List

Exploded View Diagram

Diagram showing the physical assembly of TV components.

Bill of Materials (BOM)

BOM List

List of components and part numbers for model E227ANNS2WAENN.

Different Parts Lists

Parts List Variations

Lists of parts for different model variations (E227ANNS2WAE3N).